Chain.



PATENTED JUNE 1l, 1907.

J. KINGSTON.

CHAI-N.

APPLIOATION FILED MAY24.1904.

Tl l wen-foi 'ffy W @Horne \3 UNITED STATES FAT.ITNT OFFICE..

JAMES KINGSTON, OF COLUMBUS, OHIO, ASSIGNOR TO JOSEPH A. JEFFREY, OFCOLUMBUS, OHIO.

CHAIN.

SpecificationA of Letters Patent.

Patented June 11, 1907.

Application filed May 24,1904. Serial No. 209,517-

To LZZ whom t may concern:

Be it known that I, JAMEs KINGSTON, a citizen of the United States,vresiding at Columbus, in the county of Franklin and State of Ohio, haveinvented certain new and useful Improvements in Chains, of whichthefollowing is a specification, reference being had therein to theaccompanying drawing.

This invention relates to an improvement in chains, it beingparticularly adapted for use in drivechains or conveyer chains in whichwearing plates or blocks are interposed between the adjoining links.

Figure l is a side elevation of a section of chain embodying myimprovement. Fig. 2 is a central, vertical, longitudinal section of thesame. Fig. 3 is a plan view of the same. Fig. 4 is a section on the line4 4, Fig. l. Fig. 5 is a section on the line 5-5, Fig. 1. Fig. 6 is aperspective view of a wearing block detached. Fig. 7 shows the manner ofdetaching said block. Fig. 8 is an elevation of the adjacent ends of twochain links show ing a modification of my invention applied thereto.

In the drawings l represents th'e relatively elongated loop-shaped flatlinks and 2 the relatively elongated loop-shaped links of metalrectangular in cross section which join the aforesaid flat linkstogether to form the chain, the links of both shapes preferably being ofwrought iron.

3 are wearing blocks cylindrical in general contour and adapted to tinto and rock within the looped ends llof the said flat links. Thesewearing blocks are longitudinally grooved or recessed at 3a the wall 3bof the said recess being curvilinear in shape to conform with the loopedends 2a of the links 2 which are adapted to be seated in said recess andengage with its walls. One of these wearing blocks is interposed betweenthe looped end of each link and the adjacent end of the adjoining link.

4, 4 indicate tongues or fingers stamped or cut out of the metal of theside bars of the flat links adjacent to the looped ends thereof. Thesetongues are bent inwardly toward the central longitudinal lines of thelinks and are adapted to position the wearing plates 3 at either end ofthe link and to keep them from moving longitudinally thereof.

In the drawings I have shown one means of supporting the chain duringits travel from j in any other suitable manner. cally extending walls5a, 5a of this block bear one part of the conveying system orpowertransmitting system to another. It consists of a U-shaped block 5fitted into the fiat link 1 near its center and secured to one of theside walls of the said link by rivets 5 or The vertiat the open end ofthe block against the adjacent side bar of the link. These walls serveas bearings for the transversely mounted shaft 6 which extends throughthem. 7, 7, are rollers arranged on the said shaft, one at either sideof the link and adapted to support the same during its travel.

Preferably the links 2 are made of bars of iron rectangular in crosssection so that when fitted into the wearing blocks 3a they will causethe same to turn with the link, distributing the wear over the surfaceof the block which serves substantially as a pintle of large surfacearea so as to prolong the life of the chain over what it would be if thelinks were of relatively the same proportion as herein shown and theiradjoining ends were immediately in engagement with each other.

The chain, as I have heretofore indicated, is adapted both forpower-transmitting and for conveying purposes. In the latter case anydesired style of attachment may be supplied to the flat links to fitthem for the purpose for which the chain is intendedto be used.

In Fig. 7 I have indicated the manner in which the wearing blocks may betaken out and replaced when desired. This is accomplished by turning thelink 2, which is associated with the block desired to be removed, atright angles to the fiat link into which the said block is fitted. Theblock maythen be slid along either lside of the link 2 until detached.This ready detachability of the wearing block is not only a usefulfeature when it is desired to replace a worn block, but also makes theassembling of the chain a very simple matter.

In dotted lines in Fig. 7 I have shown the block as moved longitudinallyof the link 2 and out of contact with the link I after the manner inwhich the said block is either wi thdrawn or inserted.

In Fig. 8 I have shown a modification of' thc chain in which asemicylindrical washer or bushing is inserted-between each bearing block3 and the adjacent loop end of a link l.

IOO

This washer is adapted to take the wear between the said parts. It maybe quickly and readily removed and a new one inserted after the sainemanner which has just been described for the removal of one of thewearing blocks 3.

It will be observed that the wearing block 3 is of such length that itis situated entirely within or between the planes that include theopposite edges of the broad, lat link, l, and that its exterior surfaceis shaped to t the inner surface of the end loop of such link. Such awearing block contains no superfluous metal whatever, is of a shapeeasily made and finished, and when in working position is practicallyconcealed by the links.

What I clairn is:

1. A chain comprising a series of loopshaped links, the adjacent ends ofadjoining links being looped through each other, detachable wearingpieces arranged to be freely interposed between and freely removablerom'the looped ends of the links, and means for preventing the saidwearing pieces from displacement longitudinally relative to the linkswhen the latter are in working positions.

2. A chain comprising alternate links oiC flat metal loop-shaped inforni connected together by loop-shaped links, wearing blocks interposedbetween the adjacent ends of adjoining links there being inwardprojections carried by each flat link adapted to prevent thelongitudinal movement of its wearing blocks relative thereto.

3. A chain comprising alternate loopshaped links of flat metal connectedtogether by loop-shaped links and wearing blocks interposed between theadjacent ends of adjoining links, the side bars of said flat linkshaving tongues 4 which serve to prevent the longtudinal movement of saidwearing blocks relative to said links.

4. A chain comprising alternate loopshaped links of Hat bar metalconnected together by loop-shaped links rectangular in cross section andwearing blocks interposed between the ends of adjoining links withrecesses therein rectangular in cross section and adapted to receive thelooped ends of said last described links.

5. A chain comprising a series of loopshaped links, the adjacent ends ofadjoining links being looped through each other, and detachable wearingpieces, 3, each interposed between and directly engaged by the loopedends of two links, the wearing pieces being cylindrical in shape and ofa length to be situated entirely between the planes that include theopposite edges of one of the links with which it engages, and beinglongitudinally grooved to receive and lit the end of the other link withwhich it engages. y

6. A chain comprising alternate loopshaped links of flat bar metalconnected together by other loop-shaped links and wearing blocksinterposed between the ends of adjoining links, the said wearing blocksbeing of such length as to be situated entirely between the planes thatinclude the opposite edges of the said flat links and being providedwith recesses shaped to receive the links that are united with the saidflat links, substantially as set forth.

- In testimony'whereof I aliX my signature in presence of two witnesses.

JAMES KINGSTON.

I/Vitnesses:

A. E. SALisBURY, ILE. BUELL.

